I saw the world premiere at the 2017 Florida Film Festival and was very impressed with the idea of the film - its presentation - and impact.
Jack Zeller, played very effectively by Christopher Denham, is a psychologically damaged photographer back from Afghanistan. He is evidently suffering from PTSA and is trying to get back to doing what he loves - professional photography. As an encouragement, his fiancé, Claire, buys him a vintage (WW II era) camera (naturally made in Germany.)
One chilling aspect of the camera is that a camera repair store announces that "this camera is not capable of taking photos."
Nevertheless, Jack gets a gig working for her real estate company and takes 10 rolls of film of various settings and properties with this "unworkable" camera. When the film is processed, there are surprising photos which I will not describe (you can imagine since this is a horror film.) How he reacts and tries to deal with these photos is the tension in the movie. The plot is different, well conceived and exciting.
The music and sound effects add measurably to the feel of the film and effect of the events being portrayed. Overall it is an excellent effort from first time director Aaron B. Koontz. I look forward to future efforts by Mr. Koontz. If you get the chance to take in "Camera Obscura," please do - very worthwhile.